RRB Non Technical Model Papers 8 with solutions

Question : 97 of 100

Marks: +1, -0

The average of the prime numbers between 1 and 20 is

Solution:

(1) The prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17 and 19. Average

=\text"Sum of all numbers"/\text"counting of numbers"

⇒ Average
=

{2 +3 + 5 + 7 +11 +13+ 17 + 19}/8

= 9.625

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